Audax PR38EX66UST
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 33 Hz |
| Qts | 0.344 |
| Qes | 0.39 |
| Qms | 2.94 |
| Vas | 309 L |
| Sd | 880 cm² |
| Xmax | 4 mm |
| Re | 5.8 Ω |
| Bl | 15.9 T·m |
| Mms | 81.7 g |
| Pe | 150 W |
| Sensitivity | 97.9 dB |
Alignment hint
| EBP | 85 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 95.8 L |
EBP 50-100: works in either a sealed or ported alignment.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Substitute candidates
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| JBL 2216ND vp boris | 30.7 -2.3 | 0.361 +0.02 | 312.7 +3.7 | 5 +1 | 98 +0.1 | close | 100 W vs 150 W: lower power handling | + |
| Eminence LEGEND CB15 | 34 +1 | 0.339 = | 336 +27 | 4.8 +0.8 | 98.8 +0.9 | close | + | |
| AE Speakers TD15M | 34.7 +1.7 | 0.327 -0.02 | 312 +3 | 6 +2 | 98.5 +0.6 | close | + | |
| AE Speakers TD15M 8 Ohms | 34.7 +1.7 | 0.327 -0.02 | 312 +3 | 6 +2 | 98.5 +0.6 | close | + | |
| Sonido SCW-400 | 34 +1 | 0.339 = | 357 +48 | 5 +1 | 98.6 +0.7 | close | + | |
| Beyma SM115 vp4 | 35.5 +2.5 | 0.339 = | 310.6 +1.6 | 7.3 +3.3 | 99 +1.1 | close | + | |
| Faital PRO 15PR400 vp | 32.8 -0.2 | 0.332 -0.01 | 263.2 -45.8 | 5.8 +1.8 | 98 +0.1 | close | + | |
| Eminence KAPPA 15 A | 33 = | 0.318 -0.03 | 321.3 +12.3 | 5.5 +1.5 | 99.3 +1.4 | close | + | |
| Eminence KAPPA-15A | 33 = | 0.32 -0.02 | 321.3 +12.3 | 4 = | 100.5 +2.6 | close | + | |
| Beyma CM-15G | 34 +1 | 0.375 +0.03 | 285 -24 | 5 +1 | 97.7 -0.2 | close | + |
Compare the closest 3 against the PR38EX66UST →
Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.
Used in enclosures (0)
No enclosure in the catalog uses this driver yet.